add: expandableListView.setOnItemLongClickListener()

loop/devices can be long clicked now,

fixed: setLoop2()

to do. start action mode
update: deviceListView.setChoiceMode(ListView.Choice_mode_single);


add: action mode for device item

1 device_actionmode.xml (menu layout for device action Mode)
2 startActionMode(mCallback)
add: Menu about

make a toast to show app_version
deviceList and deviceInfo fragments split view done.